In a statement, Murray denied the charge, but said that he is resigning effective the end of the business on Wednesday.

"While the allegations against me are not true, it is important that my personal issues do not affect the ability of our City government to conduct the public's business," Murray said.

Earlier in the day, the Seattle Timesreported that 54-year old Joseph Dwyer, a cousin, said that Murray molested him for about a year in Dyer's mother's home in Medford, N.Y., in the mid-1970s. Dyer said he was 13 years old at the time and sharing a bedroom with Murray.

Murray told the Times that Dyer's accusations stem from old familial antagonisms.

"There's been numerous fights between our two families for many years, and much ugliness. I guess they see me down and out, and they want to finish me off," said Murray as quoted by the Times.

Dwyer is the fifth man to accuse Murray of sexual abuse since April. Murray has repeatedly and vigorously denied the charges and said that he has been targeted for his progressive politics and support of gay rights.

But the accusations took their toll. Murray, a former Democratic state legislator, had said in May that he would not seek re-election and would retire from politics at the end of the year when his term ends.